DE602004021767D1 - Hydraulic valve clearance compensation element - Google Patents

Hydraulic valve clearance compensation element

Info

Publication number
DE602004021767D1
DE602004021767D1 DE602004021767T DE602004021767T DE602004021767D1 DE 602004021767 D1 DE602004021767 D1 DE 602004021767D1 DE 602004021767 T DE602004021767 T DE 602004021767T DE 602004021767 T DE602004021767 T DE 602004021767T DE 602004021767 D1 DE602004021767 D1 DE 602004021767D1
Authority
DE
Germany
Prior art keywords
plunger
hydraulic valve
compensation element
valve clearance
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE602004021767T
Other languages
German (de)
Inventor
Axel Berndorfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of DE602004021767D1 publication Critical patent/DE602004021767D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves

Abstract

A hydraulic lash adjuster for a valve train of an internal combustion engine comprises a body (18) having a plunger chamber (19); a hollow plunger (20) reciprocally mounted in the plunger chamber (19) of the body (18), the plunger (20) having an upper part (22) with an oil bore (24) that protrudes out of the plunger chamber (19) for engaging a socket (164) of a rocker arm (16) of a valve train; and a high-pressure chamber (28). A partition wall (32) divides the interior of the hollow plunger into two chambers. <IMAGE>
DE602004021767T 2004-02-25 2004-02-25 Hydraulic valve clearance compensation element Expired - Lifetime DE602004021767D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04100730A EP1568851B1 (en) 2004-02-25 2004-02-25 Hydraulic lash adjuster

Publications (1)

Publication Number Publication Date
DE602004021767D1 true DE602004021767D1 (en) 2009-08-13

Family

ID=34746064

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004021767T Expired - Lifetime DE602004021767D1 (en) 2004-02-25 2004-02-25 Hydraulic valve clearance compensation element

Country Status (3)

Country Link
EP (1) EP1568851B1 (en)
AT (1) ATE435359T1 (en)
DE (1) DE602004021767D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111140302A (en) * 2018-11-06 2020-05-12 丰田自动车株式会社 Valve train system for internal combustion engine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005053596A1 (en) 2005-11-10 2007-05-16 Schaeffler Kg Switchable drag lever of a valve train of an internal combustion engine
DE102005056415A1 (en) * 2005-11-26 2007-05-31 Schaeffler Kg Method for venting control pressure line between hydraulically actuated coupling element of internal combustion engine, involves electrical activation of hydraulic valve whereby pressure surge is produced in control pressure line
US20080035085A1 (en) * 2006-08-14 2008-02-14 Hendriksma Nick J Method and apparatus for controlling a switchable cam follower
US9157340B2 (en) 2013-03-25 2015-10-13 GT Technologies Dual feed hydraulic lash adjuster for valve actuating mechanism
DE102014212272A1 (en) * 2014-06-26 2015-12-31 Schaeffler Technologies AG & Co. KG supporting
US10544710B2 (en) 2015-03-23 2020-01-28 Ford Global Technologies, Llc Hydraulic circuit for valve deactivation
US9650922B2 (en) 2015-04-28 2017-05-16 Ford Global Technologies, Llc External oil groove on a hydraulic lash adjuster
US9765656B2 (en) 2015-06-15 2017-09-19 Ford Global Technologies, Llc Hydraulic circuit for valve deactivation
GB201522269D0 (en) * 2015-12-17 2016-02-03 Eaton Srl Hydraulic lash adjuster

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133332A (en) * 1977-10-13 1979-01-09 The Torrington Company Valve control mechanism
US5445116A (en) * 1992-12-22 1995-08-29 Unisia Jecs Corporation Hydraulic variable lift engine valve gear
US5509385A (en) 1995-06-15 1996-04-23 Precision Engine Products Corp. Hydraulic lash adjuster metering valve
US5901676A (en) * 1997-08-28 1999-05-11 Eaton Corporation Hydraulic lash compensator
DE19744600A1 (en) * 1997-10-09 1999-04-15 Volkswagen Ag Switchable valve train for internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111140302A (en) * 2018-11-06 2020-05-12 丰田自动车株式会社 Valve train system for internal combustion engine
CN111140302B (en) * 2018-11-06 2022-03-08 丰田自动车株式会社 Valve train system for internal combustion engine

Also Published As

Publication number Publication date
ATE435359T1 (en) 2009-07-15
EP1568851A1 (en) 2005-08-31
EP1568851B1 (en) 2009-07-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition